2013-04-04 00:51:55: Created issue 'Profile :matches() / :not() for fast vs. complete implementation' nickname owned by Elika Etemad on product Selectors Level 4, description 'People keep being confused about :matches() and :not()'s intention to allow full complex selectors. The only reason they're not allowed is perf, so let's just make two profiles for Selectors and let things like Selectors API and PDF processors implement the full version.' non-public [Elika Etemad]